Improved plastering-machine



No.. 92,985. l PATENTED JULY 2v, 1869, T.. MGKINLBY. PLASTERING MAGHmB.

Figi?,

Figli. I Jc' Witnesses:

tetta THOMAS MCKINLEY,

or NEW YORKQN. Y.

Letters Patent No. 92,985, dated July 27, 1869.

IMPROVED PLASTERINGMACHINE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Beit known that I, TmiMAs MCKINLEY, of New York, in the county of New York, and State of New York, have invented a new and useful Improvement in Plastering-Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to 'a new and improved method of plastering, whereby .the tedious yand expensive operation of covering wallsand ceilings of buildings with mortar is greatly facilitated; and

It consists .in moving over the iioor of the room where the plastering is to he done, a machine, (rest-4 ing on wheels,) consisting of a box containing themortar, with a piston to tit the box, which piston is forced upward by means o gearing actuated by tbe supporting-wheels, the mortar-'being ibrced from the boxby the piston in a thin sheet, and pressed upon the lathing. or wall as by a trowel, as will be hereinafter more fully described.

In the accompanying plate of Vdrawings- Figure 1 represents a top view of the machine.

Figin'e 2 is a vertical section of the machine through the line a: a: of fig. 1.

Figure 3 is an outside view, showing the box and a portion of the gearing.

Figure 4 is a view 'of the bottom 'of the machine. Figure 5 is a top View of the delivery-tube -or trowel.

Figure 6 is a view of a tube for forming cornice. Similar letters of reference indicate corresponding parts.

A is the box, into which the mortar is introduced through the slide-door aperture B, onto the piston O.

This piston is raised by means4 of the screw D, which engages, with a screw-thread in the tube E, which tube covers and protects the screw from contact with the mortar. I

The screw is revolved by means of the gear-wheel f on its lower end, which is connectedby other gearwheels, g and h, with the gear-wheel c', which couples with the traction-wheel J of the machine.

K, L, and M represent thc other three tractionwheels.

n is the pin by which the gear-wheel 'i is coupled with the wheel J. v

This pin may be withdrawn or connected with the wheel at the pleasure of the operator.

It is not intended, as a general thing, that the machine shall deliver mortar except when passing in one direction across the door; therefore the machine is not turned around on the reverse motion, but-the gear is uncoupled, and the machine drawn back; but

I do not confine myself 4to this method of operating the machine.

Neither do I confine myself to operating the ma'- chine on the floor ofthe room. It maybe operated from a scaffold, if deemed advisable, although one obff' ject which I have in view is to avoid the trouble and expense of building scafiolds, for plastering the ceilings and upper portion of the walls of buildings.

It will be'seen that the upper portion of thebox A is conical or pyramidal in form, to the top of which the tube O is attached, into-which the tube E of ,the piston rises, as the piston is forced up, and thro/ugh which the mortar isforced into the trowel or deliverytube R.

The tube R is reduced in size and form to a broad narrow slot, as seen at S in the drawing, with a projecting lip, '.l, on its lower portion, which receives the mortar, and presses it to the wall or ceiling,'ag-;seen in fig. 2, when the machine is moving in the dii'e'ction indicated by the arrow. l y

To compensate for any variations in the surface of the ceiling, or door or staging, the delivery-tube or trowel R may be made elastic by means of a spring,

as seen at u, or in any othermanner.

It will be seen that some provision of this kind would be necessary,'in case' the ceiling and the floor or scaffold on which the machine is operated should not be exactly parallel Witheach other.

The delivering-tubes R are placed 'on the tube O, as seen in iig. 2, where they may be secured in any suitable manner.

lhese delivery-tubes or trowels may be in any form, so as to deliver the mortar or plaster for a smooth wall, or for ceilings, or for cornices, the tube seen in fig. 6 being designed for the latter purpose; but any design or pattern may be employed for this or similar purposes. f

V represents the axles to which the driving or traction-wheels are attached.

W is a crank, attached to the gear-wheel h, by

means of which the piston is returned to the bottom of the box, by reversiugthe screw.

v I do-not confine myself to any'parti'cular size or form of machine, nor to any particular'details, as regards the Aconstruction of the machine or method of operating the piston. v'

Having thusdescribed my invention,

I claim as new, and desire to secure by Letters Patent--4 The box A, piston O, tube O, and delivery-tube R, arranged to operate substantially as herein shown and described, for the purpose speci{ied.f

' THOMAS MCKINLESL Witnesses: l

FRANK BLocKLnY, O. L. TOPLIFF. 

